10 Irrigation Specifications and Notes L3.4N Z W
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IRRIGATION SPECIFICATIONS & NOTES
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GENERAL
EXECUTION
14. PRODUCTS TO BE PROVIDED TO OWNER
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1. WORKMANSHIP
1. CONSTRUCTION
CONDITIONS
A. The following list of materials shall be provided to the Owner at the time of project completion: (2) QCV
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A. installer qualifications: System to be installed by an irrigation technician with 5 years of experience as
A. Location of sprinklers, valves and other items shall be as shown on the plans and will be of the size and
Keys - Manufacturer to match installed Quick Couple Valve. (2) Hose swivels - Manufacturer to match
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an irrigation installer. All workmanship shall be of the highest standards of the industry.
type as specified. No changes in the plans or the equipment will be made without prior approval of the
installed Hose Swivels. (2} 20" sprinkler keys, Spare irrigation body, riser and nozzle for each type
specified.
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B. Workmanship that is improper, careless, and or that does not meet specification, will be rejected. The
Project Landscape Architect.
15. PERFORMANCE TEST
replacement or replacement cost shall be at the expense of the Contractor.
B.
Electrical connections shall be made by the Contractor as indicated on the plans and specifications.
A. A performance test is part of the final review.
SCOPE OF WORK
Installations shall conform to local codes and utilities. Coordinate with Project Landscape Architect or
B. Upon completion of the system installation and after the flushing and pressure tests have been
2.
A. Furnish all labor and materials to install the irrigation system complete as shown on the plans and
Owner's Representative and Electrical Contractor for arranging power to the controller and final
controller location.
completed and the system has been adjusted, the Contractor shall operate the system in the presence
details, and as specified herein.
2. LAYOUT
of the Project Landscape Architect or Owners Representative.
B. This work includes all hoses of com Ietin and making the irrigation system full operational, as -built
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A.
The Contractor shall stake the system from the design show on the plans. Some alternations may be
C. Coverage Check: Each automatic valve shall be operated to determine complete sprinkler coverage.
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plans and an orientation meeting with the Project Landscape Architect or Owner's Representative.
required to accommodate site conditions to ensure good application rates. it is known that corrective
D. The Project Landscape Architect or or Owner's Representativemay direct that up to 5 /o of the total
nozzles be substituted, at no additional cost to the owner.
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measures in the system, if any, shall not be made without the written approval from the Project
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3. SUBMITTALS
Landscape Architect or Owner's Representative.
RECORD DRAWINGS &GUARANTEE
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A. Submit each item in this specified to the Landscape Architect.
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B.
The Contractor layout and staking shall be approved by the Project Landscape Architect or Owner's
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B. The Contractor shall provide the Project Landscape Architect a complete listing of all irrigation materials
Representative prior to trench excavation or equipment installation.
1. ADJUSTING SYSTEM
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required by this Section to be used on the project.
The listings shall include the name of the manufacturer, trade names, catalog cut sheets, specifications,
3. EXCAVATIONS
A. It is the Contractor's responsibility to locate all underground utilities before any excavation begins. Any
A. Before final inspection, the Contractor shall adjust and balance all sprinkler to provide adequate and
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model numbers, brochures and other data giving information about each item specified.
damage caused by the Contractor will be repaired at his/her expense.
uniform coverage, Spray patterns shall be balanced by adjusting individual sprinkler heads with the
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4. DAMAGE TO PROPERTY
B.
Trenches shall be wide enough to allow ample room for pipe and wire installation. When more than one
adjustment screws or replacing heads to produce a uniform pattern.
B. Sprinkler spray patterns shall not be permitted on pavement, walks or structures.
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pipe occupy the same trench, each pipe must be parallel to each other, not crossing, at a minimum of
2. AS -BUILT PLANS AND SYSTEM ORIENTATION
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A. The Contractor shall be responsible for all damage to any part of the premises caused by breaks or
leaks in final the
3" apart.
A. Contractor shall maintain a set of drawings on the site specifically for recoding changes as they occur
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the system for a period of one (1) year after acceptance of contract.
C.
All piping under paved areas shall be installed in PVC sleeves as indicated in the drawings. All
during the job.
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B. The Contractor shall be responsible for the clean up and removal of any building materials, equipment
sleeving shall be bedded with sand and a minimum depth of 6" under and 6" over pipe sleeves.
B. The Contractor shall conduct a training and orientation session covering the operation, adjustment,
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and trash resultingfrom his/her work. The Contractor, upon completion, shall leave the property in a
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Contractor shall provide more than one 4" sleeve to accomodate pipes if necessary.
winterization and maintenance of the irrigation system. The Contractor shall provide the owner with a
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clean and orderly condition.
D.
Mainline shall be installed at a minimum depth of 18", maximum depth of 24".
parts list and service manuals for all equipment. Contractor shall be responsible for one fail
MATERIALS
E.
Where multiple irrigation pipes share a common trench, trench shall be sufficiently wide or piping shall
winterization and one spring activation of the system and shall conduct these operations as part of the
be arranged to allow 2" minimum horizontal separation and 6" minimum vertical separation between
Owners training and orientation procedure.
1. CONDITION OF MATERIALS
piping, while maintaining specified minimum and maximum cover over piping.
4. BACKFILLING
C. Contractor shall provide a zone control map encased in plastic and mounted next to the Controller. The
A. All materials to be installed on this project shall be new and free of defects.
A.
All materials to be used as backfiil over pipes and around valve bores, and vault must be fully
map will show main and zone valves and the area they cover.
2. WATER METER
compacted to eliminate future settling. All backfili in structural (non landscape) areas shall be
3. MAINTENANCE AND GUARANTEE
A. The Contractor shall provide a written guarantee to the Owner covering all materials, installation,
A. Anew 1-inch water meter will supply the irrigation system.
3. BACKFLOW PREVENTION DEVICE
B.
compacted as specified.
All material used as backfili must be clean of all debris and rocks larger than 1" in diameter. Such
workmanship, and against defects for a period of one (1) calendar year upon final acceptance by the
A. Install new device, as shown on the drawings and details. Per City of Federal Way requirements.
debris and rocks shall be gathered and removed from the site.
Project Landscape Architect. Contractor shall be responsible for maintaining system and protecting it
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4. QUICK COUPLING VALVES
5. PVC
PIPE LINES
from all damage, at no cost to the owner, for the duration of the maintenance period, including damage
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A. install per plans and details.
A.
Install pipe as shown on drawings and details.
caused by vandalism or adverse weather conditions.
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5. PVC PIPE, FITTINGS, NIPPLES
B.
PVC pipe shall be installed on flat bottom trenches in a manner as recommended by the manufacturer
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A. Install per plan,
to allow pipe to expand and contract.
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B. Pipe shall be marked with manufacturer's name, class of pipe, NSF seal and date of manufacturer run,
C.
All pipe shall be cut with a hand saw/hack saw in a manner to provide square ends. All shavings and
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Pipe shall bear no evidence of interior or exterior extrusion marks. Pipe walls shall be uniform, smooth;
burrs must be removed before welding pipes or fittings.
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and glossy. Pipe may be pre -belled or with individual solvent -weld couplings for laterals. Glass 200
D.
Flush main free of all debris and shavings prior to installing ACV's. Flush all laterals prior to installing
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pipe shall have SDR rating of 21.
sprinkler heads.
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C. PVC fittings shall be schedule 40 rated and meet ASTM D2466 standards and specifications.
E.
Contractor shall exercise care when loading, hauling and handling pipe. Damaged pipe will not be
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D. PVC nipples shall be schedule 80 rated and meet ASTM D1785 requirements and standards. All
accepted or used on this project.
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nipples will have tapered threads.
F.
Install sleeves under paved surfaces (ail hard surfaces) to allow for irrigation piping and electrical
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6. JOINING MATERIALS
wiring.. Sleeve ends shall be sealed.
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A. All joining materials used will be manufactured by IPS or equal, and will be used in accordance to the
G.
Allow minimum 15 minutes setup time for solvent weld joints before moving or handling. Pipe shall be
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manufacturer's written specifications and safety recommendations.
partially center loaded to prevent arching or slipping. No water shall be permitted in the pipe for at least
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B. All threaded connections (PVC) shall be sealed using Teflon tape.
10 hours to allow solvent weld set and cure. Backfiliing shall be done when pipe is not in an expanded
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C. All galvanized threads shall be sealed with an approved Teflon base pipe compound
condition due to heat or pressure. Cooling of the pipe can be accomplished by operating the system for
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D. PVC solvent compounds shall be IPS Weld -On P-70 purple primer and Weld -On P-711 heavy -bodied
a short period of time before backfilling or by backfilling the early part of the morning before the heat of
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gray cement or approved equal.
the day. Before pressure testing, allow 24 hours cure time for solvent weld joints.
7. GALVANIZED PIPE AND FITTINGS
6. SOLVENT WELD JOINTS
A. Galvanized steel pipe shall be schedule 40, hot dipped galvanized, conforming to ASTM-A120-76
A.
All solvent weld joints must be first primed and then welded per manufacturer's recommendations.
specifications.
B.
The pipe and fittings shall be clean of all foreign matter and water before solvent can be applied.
B. Galvanized fittings shall be of malleable iron, hot dipped galvanized.
C.
Contractor shall not be allowed to weld mainline pipe with a 'one step' glue such as IPS 721 or 725 or
C. Galvanized pipe, nipples and fittings shall be of domestic origin.
equivalent.
8, CONTROL WIRE
7. POINT
OF CONNECTION
A. Control wire shall be 14 ga, solid copper wire, to be OF rated and UL listed. Use Red wire for leads,
A.
Per Drawings and Details.
White wire for common, Black wire for spare, and Yellow wire for Master Valve.
8. CONTROL WIRE
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B. Wire connectors shall be 3M DBY, or approved equal.
A, `
Wire shall be pulled from valve location to controller location in one continuous piece.
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C. PE-89 Maxi cable shall be used to connect the flow sensor to the controller. Ranger Seal Closures shall
B.
Wire shall be grouped together, taped with electrical tape at 10' intervals. Wire then will be installed
be used when connecting to the flow sensor.
under main line or laterals in a soft snaking manor to prevent copper from being stretched and or
9. TRACE WIRE
damaged.
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A. Trace wire shall be 12 ga. solid bare copper wire, to be OF rated and UL listed.
C.
Coin a minimum of 5' of each wire in each valve box.
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10. VALVE BOXES
D.
No file wire splices shall be allowed between valve boxes. All wiring connections shall bed installed in
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A. Valve boxes for master valves and control valves shall be Carson -Brooks, green plastic HDPE box,
valve boxes or separate handhole.
High Performance Series Model 1419-12 with 1419-313 locking cover, or approved equal. The cover
9. CONTROLLER
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shall be bolted down with stainless steel bolts. Box and cover to be green. Valve box extensions shall
A.
Controller shall be wall mounted as detailed. Coordinate exact location of controller with Owner.
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be compatible with valve box, and used as needed to meet finished grade.
B.
Coordinate with the Electrical Contractor to ensure proper connection of controller to power.
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B. Valve boxes for mainline gate valves and quick coupler valves shall be Carson -Brooks, green plastic,
10. AUTOMATIC CONTROL VALVES
mode 910-12 with 9104B bolt down T cover or approved equal, 10 inch diameter circular boxes with 7
A.
Per Drawings and Details.
C
inch diameter PVC sleeve below. Cover is to be green and marked "Irrigation".
B.
Contractor shall install one valve assembly box.
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C. Valve boxes for the backflow device shall be stacked concrete meter boxes, per City of Federal Way
C.
All valve boxes shall receive a polyurethane identification tag identifying the valve station number.
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requirements,
Valve number shall be marked on exterior of valve box lid with a minimum 1" letters.
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11. AUTOMATIC CONTROLLER REMOTE CONTROL DEVICE & ACCESSORIES
11. VALVE BOXES
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A. Controller and accessories shall be those shown on the drawings.
A.
Install all other boxes plumb and flush with finish grade. Valve box archway shall not rest on piping.
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B. Install on exterior wall as directed by Owner's Representative. Shall be wall mounted at chest height.
Provide a minimum of 1" clearance around the inlet and outlet pipe.
12. AUTO -CONTROL VALVES
12. SPRINKLER
HEADS
A. Per Plans and Details.
A.
Contractor shall install sprinklers as detailed on the drawings_
13. FLOW SENSOR
B.
Placement of heads shall be 4" from edge of paving/concrete edge.
A. ' Per Plans and Details.
13. TESTING OF SYSTEM
14. SPRINKLER HEADS
A.
After flushing and valving main line prior to backfilling, a pressure test will be required on the main line.
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A. - Per Plans and Details.
B.
Mainline shall have a one hour test at a pressure of 150 PSI. A maximum pressure loss of 5 PSI is
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15. DRIP IRRIGATION
allowed.
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A. Per Plans and Details.
C.
Contractor is responsible to set up all equipment necessary to comply with test.
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16, VALVE IDENTIFICATION TAG
D.
Contractor shall schedule pressure test 48 hours in advance with Project Landscape Architect or
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A. Polyurethane identification tag shall be as supplied by T. Christy, model No. ID-STD-YI or approved
Owner's Representative.
equal
E.
Lateral lines shall be visually tested before heads are installed of line pressure. Schedule pressure
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17. NOT LISTED EQUIPMENT
tests on lateral with Project Landscape Architect 48 hours in advance.
A. Not all materials needed for the completion of this irrigation system have been listed. it shall be the
F.
Before any testing starts, all air must be expelled from the pipe.
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Contractor's responsibility to furnish and install any items required to complete this irrigation system as
G.
Any section of pipe not passing pressure test shall be repaired and retested.
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designed, detailed and specified.
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